20=2(s+9)

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Solution for 20=2(s+9) equation:


Simplifying
20 = 2(s + 9)

Reorder the terms:
20 = 2(9 + s)
20 = (9 * 2 + s * 2)
20 = (18 + 2s)

Solving
20 = 18 + 2s

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Add '-2s' to each side of the equation.
20 + -2s = 18 + 2s + -2s

Combine like terms: 2s + -2s = 0
20 + -2s = 18 + 0
20 + -2s = 18

Add '-20' to each side of the equation.
20 + -20 + -2s = 18 + -20

Combine like terms: 20 + -20 = 0
0 + -2s = 18 + -20
-2s = 18 + -20

Combine like terms: 18 + -20 = -2
-2s = -2

Divide each side by '-2'.
s = 1

Simplifying
s = 1

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